(Reuters) - An auction for well-heeled fans of Warren Buffett to eat lunch with the billionaire in support of a San Francisco charity that helps the homeless and impoverished got off to a fast start, with bidding quickly hitting seven figures.

The top bid was $1 million as of 1 p.m. EDT on Monday, and had been made within two minutes of the auction's Sunday night launch.

Bids often surge near the end of the eBay auction, which concludes on Friday at 10:30 p.m. EDT...